I have a small red bump right under the clitoris before the opening of the vulva. i recently had sex but am not having any other symptoms. it is uncomfortable when i walk. i noticed it 2 days ago. should i go to the er for treatment?

Vaginal lesion : I wouldn't suggest going to the ER, I would suggest seeing a gynecologist as soon as possible.

Gynecologist: I think you'd get better care by consulting a gynecologist for diagnosis and treatment. The lump could be from a blocked gland or could be a herpes outbreak which can be treated with medication. The discomfort does suggest some degree of inflammation.